Pitch-angle space. Top: Reconstruction of the electron pitch-angle distribution as observed by Solar Orbiter in the energy range of 30 to 50 keV, using data from EPT and STEP. The top-right panel shows three slices through the pitch-angle distribution at different times during the event, indicated by labels 1, 2 and 3 on the top-left panel. EPT and STEP measurements are represented by filled squares and empty circles, respectively. Bottom: Left from top to bottom: electron intensity in the eight sectors of Wind/3DP, corresponding pitch angles of the bin centres, combined pitch-angle distribution with electron intensities marked by colour-coding, magnetic field magnitude and RTN-components, magnetic field latitudinal and azimuthal angles, and first-order anisotropy. Right: 2-dimensional pitch-angle distributions at the times marked by vertical lines in the plot on the left.